Coplay, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coplay, a borough in Lehigh County, Pennsylvania.
Overnight
60°F
Partly Cloudy
Partly cloudy, with a low around 60. Wind around 0 mph.
7-day forecast for Coplay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Partly Cloudy | 0 mph | 0% |
| Tuesday | 85°F | Mostly Sunny | 0 mph | 0% |
| Tuesday Night | 63°F | Mostly Cloudy | 0 mph | 2% |
| Wednesday | 84°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph E | 57% |
| Wednesday Night | 69°F | Showers And Thunderstorms Likely | 0 mph | 61% |
| Thursday | 89°F | Showers And Thunderstorms | 0 to 5 mph SW | 75% |
| Thursday Night | 71°F | Showers And Thunderstorms | 0 to 5 mph SW | 75% |
| Friday | 89°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 60% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph W | 60% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 45% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 45% |
| Sunday | 88°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 69°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Coplay (40.671, -75.496). Updated through the day.
Growing snapshot for Coplay
Last spring frost
Apr 20
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
7a
More local growing data for Coplay: nearby ZIP 18052 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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North Catasauqua
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Climate data from the nearest NOAA station, Allentown Intl Ap, Pa (2.9 mi from Coplay). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.